Mod Version: 2.0.1+1.20.1
MC Version: 1.20.1
Fabric Version: 0.16.10
Java Version: 21
Dehydration Version: 1.3.6+1.20.1

Problem:
When puddles mod is running, filling up the Dehydration flask from a water block (tested with normal water block) will result in a crash-to-desktop.

Solution:
So far disabling puddles resulted in a 100% success rate in filling the flask

Crash Log:
crash-2025-01-19_20.57.48-client.txt

I appreciate you checking! Excited to drink clean water again!

This is caused by Dehydration's Puddles compatibility being outdated on 1.20.1.
https://github.com/Globox1997/Dehydration/blob/1.20/src/main/java/net/dehydration/item/LeatherFlask.java#L170
Not much I can do about it from my side.

I just looked into it a bit more and it seems like I can actually fix the issue on my side.
The field type of Puddles.Puddle just needs to be changed back from PuddleBlock to Block.